any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...

in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.

introduction acetic acid bacteria are large group of obligate aerobic gram negative bacteria with the ability to oxidize ethanol to acetic acid (1). they are widely distributed in natural habitats and classified in family acetobacteraceae. members of this family are useful in industrial production of vinegar(2). acetic acid bacteria (aab) can use substrates as glucose, ethanol, lactate or glyc...

مقدمه و هدف: کراتینوسیت های اپی درمی، به طور مکانیکی و آنزیمی از موش های تازه متولد 0-3 روزه جدا شده و روی سوبسترای کشت فیبرونکتین-کلاژن قرار گرفتند. سلول های بنیادی اپی درمی به وسیله ی اتصال سریع در بازه ی زمانی 10 دقیقه روی این ماتریکس مرکب از فیبرونکتین و کلاژن انتخاب شدند، سلول های نچسبیده دور ریخته شدند و سلول های چسبیده در essential minimal eagle medium(emem) محیط کشت فاقد کلسیم ، حاوی 0....